Accessing Data Members Through Objects

C++ provides .* exclusively for use with pointers to members called member deference operator. This operator is used to access class members using a pointer to members and it must be used with the objects of the class. For example

Class X

{

int y;

public:

int a;

int b;

}

void main()

{

X Obj;

int X::*ptr; //

ptr = &X::a; // int X::*ptr = &X::a;

Obj.*ptr = 20;

int k = Obj.*ptr;

}